Modification of multi-walled carbon nanotubes by microwave digestion method as electrocatalyst supports for direct methanol fuel cell applications |
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| Institution: | 1. Department of Chemistry, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;2. School of Materials Science and Metallurgy, Northeastern University, Shenyang, Liaoning, 110819, China;3. Faculty of Technology, Sør-Trøndelag University College, Trondheim, Norway;4. Department of Materials Technology and Engineering, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;5. School of materials Science and Engineering, Shanghai University, Shanghai, 200072, China |
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| Abstract: | Multi-walled carbon nanotubes (MWCNTs) which were directly synthesized on carbon cloth were modified by a microwave digestion method in 5 M HNO3 for supporting Pt nanoparticles. The characterizations of modified CNTs were carried out by TEM, XPS, FTIR and Raman spectroscopy. The HRTEM image shows the caps of MWCNTs are opened after modifying by microwave digestion method. The open-end and undamaged MWCNTs can provide a larger surface area for supporting more catalysts. Furthermore, the methanol electrocatalytic oxidation of microwave digestion treated Pt/MWCNTs electrode shows higher current density than pristine and nitric acid-treated MWCNTs from cyclic voltammograms. This can be an effective and undamaged method for modifying CNTs. |
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